﻿namespace DataBase
{
    public partial class FormBase : Form
    {
        public FormBase()
        {
            InitializeComponent(); 
        }
        public WizardController controller = null;
 
        #region 函数
        /// <summary>
        /// 自定义函数
        /// </summary>
        public void DisableButton()
        {
            if (this.controller == null)
                return;
            if (this.controller.IsFirstForm)
            {
                this.buttonPrev.Enabled = false;
            }
            else
            {
                this.buttonPrev.Enabled = true;
            }
            if (this.controller.IsLastForm) //如果是向导的最后一个页面，显示“完成”
            {
                this.buttonNext.Text = "完成";
            }
            else    //否则显示“下一步”
            {
                this.buttonNext.Text = "下一步";
            }
        }
        protected virtual void UpdateInfo()  //由“每一步FormStep1，FormStep2…”的界面 具体实现
        {
 
        }
        protected virtual void GoNext()
        {
            UpdateInfo();
            if (this.controller.IsLastForm) //如果是向导的最后一个页面，则调用“FinishWizard()”
            {
                controller.FinishWizard();
                this.Visible = false;
            }
            else//如果是向导的最后一个页面，则调用“GoNext()”
            {
                controller.GoNext();
            }
        }
        protected virtual void GoPrev()
        {
            UpdateInfo();
            controller.GoPrev();
        }
        //protected virtual void Finish()
        //{
        //    UpdateInfo();
        //    controller.FinishWizard();
        //    this.Visible = false;
        //}
        protected virtual void Cancel()
        {
            this.controller.info = null;
            this.Close();
        }
        #endregion
 
        #region 界面控件事件
        /// <summary>
        /// 界面控件事件
        /// </summary>
        /// <param name="sender"></param>
        /// <param name="e"></param>
        private void buttonPrev_Click(object sender, EventArgs e)
        {
            GoPrev();
        }
        private void buttonNext_Click(object sender, EventArgs e)
        {
            GoNext();
        }
 
        //private void buttonFinish_Click(object sender, EventArgs e)
        //{
        //    Finish();
        //}
        private void buttonCancel_Click(object sender, EventArgs e)
        {
            Cancel();
        }
        #endregion   
    }
}
 
2.一个WizardController.cs文件（非界面）
namespace DataBase
{
    public class WizardController
    {
        private ArrayList WizardForms = new ArrayList();
        private int curIndex = 0;
 
        #region 构造函数
        /// <summary>
        ///构造函数
        /// </summary>
        public WizardController()
        {
            WizardForms.Add(new FormStep1()); //frmStep1继承自FormBase
            WizardForms.Add(new FormStep2());
            WizardForms.Add(new FormStep3());
            foreach (FormBase frm in WizardForms)
            {
                frm.controller = this;
                frm.DisableButton();
            }
        }
        #endregion
 
        #region 自定义函数
        /// <summary>
        /// 自定义函数
        /// </summary>
 
        public bool IsFirstForm //属性
        {
            get { return curIndex == 0; }
        }
        public bool IsLastForm //属性
        {
            get { return curIndex == this.WizardForms.Count - 1; }
        }
 
        public void GoNext()
        {
            if (curIndex + 1 < WizardForms.Count)
            {
                ((FormBase)WizardForms[curIndex]).Visible = false;
                curIndex++;
            }
            else
            {
                return;
            }
            ((FormBase)WizardForms[curIndex]).Show();
            ((FormBase)WizardForms[curIndex]).DisableButton();
        }
 
        public void GoPrev()
        {
            if (curIndex - 1 >= 0)
            {
                ((FormBase)WizardForms[curIndex]).Visible = false;
                curIndex--;
            }
            else
            {
                return;
            }
            ((FormBase)WizardForms[curIndex]).Show();
            ((FormBase)WizardForms[curIndex]).DisableButton();
        }
 
        public void BeginWizard()
        {
            ((FormBase)WizardForms[0]).Show();
            ((FormBase)WizardForms[curIndex]).DisableButton();
        }
 
        public void FinishWizard()
        {
            curIndex = 0;
            Dispose();
        }
 
        private void Dispose()
        {
            foreach (FormBase frm in WizardForms)
            {
                frm.Close();
            }
        }
        #endregion
    }
}
 
3. FormStep1界面继承自FormBase，上面有一个Label控件，Text属性“This is FormStep1”
namespace DataBase
{
    public partial class FormStep1 : DataBase.FormBase
    {
        public FormStep1()
        {
            InitializeComponent();
        }
 
        protected override void UpdateInfo()
        {
            MessageBox.Show("第一步！","Step1",MessageBoxButtons.OK,MessageBoxIcon.Information);
        }
    }
}
 
4. FormStep2界面继承自FormBase，上面有一个Label控件，Text属性“This is FormStep2”
namespace DataBase
{
    public partial class FormStep2 : DataBase.FormBase
    {
        public FormStep2()
        {
            InitializeComponent();
        }
 
        protected override void UpdateInfo()
        {
            MessageBox.Show("第二步！", "Step2", MessageBoxButtons.OK, MessageBoxIcon.Information);
        }
    }
}
 
5. FormStep3界面继承自FormBase，上面有一个Label控件，Text属性“This is FormStep3”
namespace DataBase
{
    public partial class FormStep3 : DataBase.FormBase
    {
        public FormStep3()
        {
            InitializeComponent();
        }
        protected override void UpdateInfo()
        {
            MessageBox.Show("第三步！", "Step3", MessageBoxButtons.OK, MessageBoxIcon.Information);
        }
    }
}
6.FormTestWizard界面，上面一个button，Text属性“启动向导”
namespace DataBase
{
    public partial class FormTestWizard : Form
    {
        public FormTestWizard()
        {
            InitializeComponent();
        }
 
        private void button1_Click(object sender, EventArgs e)
        {
            WizardController controller = new WizardController();
            controller.BeginWizard();
        }
    }
}
 
7.修改程序的启动界面为“FormTestWizard”
namespace DataBase
{
    static class Program
    {
        /// <summary>
        /// 应用程序的主入口点。
        /// </summary>
        [STAThread]
        static void Main()
        {
            Application.EnableVisualStyles();
            Application.SetCompatibleTextRenderingDefault(false);
            Application.Run(new FormTestWizard());  //启动界面
        }
    }
}